- a combining form meaning “pus,” used in the formation of compound words: pyogenesis.
Also especially before a vowel, py-.
Origin of pyo-
< Greek, combining form of pýon; akin to Latin pūs pus
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
before a vowel py-
- denoting puspyosis
from Greek puon
Word Origin and History for pyo-
word-forming element meaning "pus," from comb. form of Greek puon "pus" (see pus).
Online Etymology Dictionary, © 2010 Douglas Harper